Almost all the kits I have done have been with EC-1118 or the
71b-1122.

What the most prominent differences that I will see with these two new
yeasts?

They both have started fermenting within 18 hours and now are at 71F
in a 68F room, so they seem to have started just right.

The RC-212 is in a Brew King limited edidtion Syrah/Mourverde from
springtime that I finally got a chance to start and the Cuvee in a
Brew King Italian Pinot Grigio also purchased in Feb/March with a
Jan03 manufacture date.

So far I have been very impressed with the quality of these kits. I
did two batches of their limited edition Chardonnay from Jan; I did
one with the EC-1118 and the other with the 71B and both tasted great
as I bottle from carboy last weekend.